Oliver Hardy and Colleen Moore also filmed by the Chaplin-Keaton-Lloyd alley in Hollywood, across the street. It’s amazing how everyone filmed on this one block. Here's Hardy in Billy West's Chaplin knock-off His Day Out (1918). Thanks Richard for letting us know about this film being online (see recent post).

Colleen and Harry Houdini also crossed paths

And if you go to the post you'll also see Billy West filmed at the same mansion gate Keaton used in Cops, where Houdini filmed too. To see all, read

This all makes perfect sense John, since Billy West was shooting the King Bee comedies and many of his later films at studios on Gower off Sunset, and Al Christie's studios were off Sunset at Gower, and Keaton only had to come up north a few blocks from the Keaton studios that this would be a popular alley to shoot at when an alley was needed.